I saw a couple Pythons on here a while ago, so I thought I'd give it a shot. I've tried to make some revolvers but I've never been satisfied with them. Finally I have one that I'm happy with. It measures just over 11.25" long which is almost exact. I have a couple variants too. I've done a snub nose version, as well as a brown on black recolor, and a dark gray version that looks like a revolver from the old west.
Thanks for using me as inspiration! It's amazing how every single detail is built in a different way on yours compared to mine, but the overall look is very similar. That is just one of the wonders of Lego, there are so many ways to build the same thing.